"Every time I'm around Faith Hill, I turn into a complete idiot," the "Vice" singer reveals. "And I don't know why, but it's just Faith Hill and she's so pretty and she's just awesome."

Lambert had a chance to interact with the superstar singer backstage at the 2017 ACM Awards, where she sang her gut-wrenching single, "Tin Man," which is rumored to be about ex-husband Blake Shelton. The country star says that she was originally going to perform her current single "We Should be Friends," but changed her mind just two days before the awards show.

"I want to showcase as many songs off this record as possible because it's a double record album," Lambert reveals of her ACM Album of the Year-winning The Weight of These Wings. "There's 22 more songs that haven't been 'singles' so I just thought 'well the best way to do that is just every opportunity I have is to do a different song."

Lambert's performance of "Tin Man" was a highlight of the show, and while she's been performing it solo while out on the road, she says that she was still "totally terrified" to sing it live on the Vegas stage.